package com.itheima.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.itheima.contast.MessageConstant;
import com.itheima.dao.MemberDao;
import com.itheima.dao.OrderDao;
import com.itheima.dao.OrderSettingDao;
import com.itheima.entity.Result;
import com.itheima.pojo.Member;
import com.itheima.pojo.Order;
import com.itheima.pojo.OrderSetting;
import com.itheima.service.OrderService;
import com.itheima.utils.DateUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;
import java.util.Map;

/**
 * @author Gallant
 * @create 2020-07-07 17:28
 */
@Service(interfaceClass = OrderService.class)
@Transactional
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderSettingDao orderSettingDao;
    @Autowired
    private MemberDao memberDao;
    @Autowired
    private OrderDao orderDao;

    // 对于订单的业务处理
    public Result order(Map map) throws Exception {
        // 1.检查用户所选择的预约日期有没有进行了预约设置
        String orderDate = (String) map.get("orderDate");
        OrderSetting orderSetting = orderSettingDao.findByOrderDate(DateUtils.parseString2Date(orderDate));
        if (orderSetting == null){
            return new Result(false, MessageConstant.SELECTED_DATE_CANNOT_ORDER);
        }
        // 2.检查所选日期是否已满
        int number = orderSetting.getNumber();
        int reservations = orderSetting.getReservations();
        if (reservations >= number){
            // 已经约满
            return new Result(false,MessageConstant.ORDER_FULL);
        }
        // 3.检查是否重复预约
        String telephone = (String) map.get("telephone");
        Member member = memberDao.findByTelephone(telephone);
        if (member != null){
            Integer memberId = member.getId();
            Date date = DateUtils.parseString2Date(orderDate);
            String setmealId = (String) map.get("setmealId");
            Order order = new Order(memberId, date, Integer.parseInt(setmealId));
            // 根据条件查询
            List<Order> list = orderDao.findByCondition(order);
            if (list != null && list.size() > 0){
                // 说明用户是在重复预约
                return new Result(false,MessageConstant.HAS_ORDERED);
            }
        }else {
            // 4.检查当前用户是否为会员,不是那就自动完成注册并进行预约
            // 设置会员信息
            member = new Member();
            member.setPhoneNumber(telephone);
            member.setName((String) map.get("name"));
            member.setIdCard((String) map.get("idCard"));
            member.setSex((String) map.get("sex"));
            member.setRegTime(new Date());
            // 自动完成注册
            memberDao.add(member);
        }
        // 5.预约成功并更新当日的预约人数
        Order order = new Order();
        // 设置会员id
        order.setMemberId(member.getId());
        // 设置预约日期
        order.setOrderDate(DateUtils.parseString2Date(orderDate));
        order.setOrderType((String) map.get("orderType"));
        order.setOrderStatus(Order.ORDERSTATUS_NO);
        order.setSetmealId(Integer.parseInt((String)map.get("setmealId")));
        orderDao.add(order);
        orderSetting.setReservations(orderSetting.getReservations() + 1);
        orderSettingDao.editReservationsByOrderDate(orderSetting);
        return new Result(true,MessageConstant.ORDER_SUCCESS,order.getId());
    }

    @Override
    public Map findById(Integer id) throws Exception {
        Map map = orderDao.findById4Detail(id);
        if (map != null){
            Date orderDate = (Date) map.get("orderDate");
            map.put("orderDate",DateUtils.parseDate2String(orderDate));
        }
        return map;
    }
}
